import originJSONP from 'jsonp'
export default function jsonp(url, data, option) {
 url += (url.indexOf('?') < 0 ? '?' : '&') + param(data)
 return new Promise((resolve, reject) => {
 originJSONP(url, option, (err, data) => {
  if (!err) {
  resolve(data)
  } else {
  reject(err)
  }
 })
 })
}
function param(data) {
 let url = ''
 for (var k in data) {
 let value = data[k] !== undefined ? data[k] : ''
 url += `&${k}=${encodeURIComponent(value)}`
 }
 // 删除第一个&
 return url ? url.substring(1) : ''
}